Presta valve, seven-layer TPU material (thermoplastic polyurethane), lightweight and space-saving design, repair kit included, not suitable for rim brakes. Type Article Width Inch 1, 1 1/4 x 1 3/4, 1 1/8 x 1 3/4, 1.20 ETRTO 25-622, 28-622, 30-622, 32-622 Area of Use Race Main Color transparent Wheel Size 28" Valve Type Presta (SV) Valve Length 100.0 mm The Continental TPU inner tube is lightweight, compact, and reduces rolling resistance. TPU is a combination of plastic and silicone material, making it both strong and flexible and long-lasting. The high-quality TPU, consisting of 7 sealed layers, maximizes airtightness and durability. The inner tubes are uncolored to ensure maximum quality and prevent finishing defects. The base of the valve has a slightly conical shape to improve the fit on the rim and reduce unwanted movement, while the valve has an internal thread to allow the use of valve extenders or a replacement valve core. Lightweight inner tube made of Thermoplastic Polyurethane (TPU) ETRTO size: 25-622 > 35-622 Very light: 35 grams Low rolling resistance Small volume Easy to repair (repair kit included) Continental Article number: 738690 EAN code: 4019238326598 Supplier number: 0182731 Retail packaging: Yes